# Ruler vs Convay Chat

The clearest difference is in-app purchases: Convay Chat at none against Ruler's 1. Convay Chat also leads on ads (none vs shown) and update cadence (every 6 weeks vs every 5 months). Ruler's advantage is iOS requirement (15.0 vs 18.5). On price and device support there is nothing between them.

Both are free to download. Ruler sells 1 one-off in-app purchase. Convay Chat asks for nothing beyond the download.

Ruler ships an update every 5 months, Convay Chat every 6 weeks. The most recent releases landed on October 13, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Ruler | Convay Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 227 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [mitsunori oishi](https://appshunter.io/developer/905649994) | [Synesis IT Ltd.](https://appshunter.io/developer/1522078348) |

## What reviewers say

### Ruler

[App page](https://appshunter.io/ios/app/ruler-scale-ruler/id919130707)

This app displays various measurement scales for length, including meters and inches. It allows users to set magnification ratios and reduced scales for different applications. Users can calibrate the ruler and adjust PPI settings for accurate measurements.

**Highlights:** Display various measurement scales, Set magnification ratios, Set reduced scales, Measure in meters and inches, Free mode for custom scales, Calibration for accuracy, PPI setting

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hide Ads | $0.99 | one-time |


### Convay Chat

[App page](https://appshunter.io/ios/app/convay-chat/id6736435933)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ruler free?

Ruler is free to download, with in-app purchases available.

### Is Convay Chat free?

Convay Chat is free to download, with no in-app purchases.

### Do Ruler or Convay Chat have ads?

Ruler shows ads; Convay Chat does not.

### Which is updated more often, Ruler or Convay Chat?

Ruler ships an update every 5 months, and Convay Chat every 6 weeks. Most recently, Ruler was updated on October 13, 2026 and Convay Chat on September 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*